| See under diagonal (def. 9). |
[dahy-ag-uh-nl, -ag-nl] 
| 1. | Mathematics.
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| 2. | having an oblique direction. |
| 3. | having oblique lines, ridges, markings, etc. |
| 4. | a diagonal line or plane. |
| 5. | virgule. |
| 6. | a diagonal row, part, pattern, etc. |
| 7. | Manège. (of a horse at a trot) the foreleg and the hind leg, diagonally opposite, which move forward simultaneously. |
| 8. | diagonal cloth. |
| 9. | Mathematics. a set of entries in a square matrix running either from upper left to lower right (main diagonal or principal diagonal) or lower left to upper right (secondary diagonal). |
| 10. | Chess. one of the oblique lines of squares on a chessboard: He advanced his bishop along the open diagonal. |
| diagonal (dī-āg'ə-nəl) Pronunciation Key
Adjective Connecting two nonadjacent corners in a polygon or two nonadjacent corners in a polyhedron that do not lie in the same face. Noun A diagonal line segment. |
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